單項(xiàng)選擇題《食用鹽》衛(wèi)生標(biāo)準(zhǔn)規(guī)定,精制鹽中水不溶物含量應(yīng)()

A.≤0.1g/100g
B.≤0.4g/100g
C.≤0.5g/100g
D.≤1.0g/100g